Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwC5nZlMtRWIbzxwu/77SH/X3UG3GyPAAkSltA3OZKp37kW0zWRp7uR7/ys9… (844 chars)"
  }
}